Looking for a pasta dish that’s anything but ordinary? Our Cajun Steak Mozzarella Alfredo Pasta is a delightful explosion of flavors and textures. Tender steak strips, seasoned with a zesty Cajun blend, meet a creamy, cheesy Alfredo sauce, all tossed with perfectly cooked fettuccine. But we don’t stop there! A vibrant basil pesto ribbon adds a fresh, herbaceous counterpoint, elevating this dish from comforting classic to culinary masterpiece. This recipe is perfect for a weeknight indulgence or a special occasion โ prepare to impress!

What You’ll Need
- 300g (10.5oz) Fettuccine Pasta: We recommend fettuccine for its ability to hold the rich Alfredo sauce, but feel free to experiment with other long pasta shapes like linguine or tagliatelle. Look for a high-quality pasta made with durum wheat semolina for the best texture.
- 250g (9oz) Beef Sirloin Steak: Sirloin steak offers a great balance of flavor and tenderness. Ensure it’s cut into bite-sized strips, approximately ยฝ inch thick, for quick and even cooking. You can also use ribeye or New York strip if you prefer a richer flavor.
- 1 Tbsp (15ml) Cajun Seasoning: This is where the magic happens! Choose a Cajun seasoning blend that suits your spice preference โ some are mild, while others pack a serious punch. Look for blends containing paprika, cayenne pepper, garlic powder, onion powder, and oregano.
- 2 Tbsp (30ml) Olive Oil: Extra virgin olive oil is best for its flavor and health benefits. We’ll be using it for searing the steak and sautรฉing the aromatics.
- 2 Cloves Garlic, Minced: Freshly minced garlic is essential for a fragrant and flavorful base. Avoid using pre-minced garlic, as it lacks the same intensity.
- 1 Small Onion, Finely Diced: A small yellow onion provides a subtle sweetness and depth of flavor. Dicing it finely ensures it cooks evenly and blends seamlessly into the sauce.
- 150g (5.3oz) Mozzarella Cheese, Shredded: Low-moisture, part-skim mozzarella is ideal for Alfredo sauce as it melts beautifully without becoming overly greasy.
- 200ml (ยพ cup) Heavy Cream: Heavy cream (also known as whipping cream) is the key to a rich and luxurious Alfredo sauce. Don’t substitute with milk or half-and-half, as the sauce won’t thicken properly.
- 100g (3.5oz) Grated Parmesan Cheese: Freshly grated Parmesan cheese is a must! Pre-grated Parmesan often contains cellulose, which can prevent it from melting smoothly. Parmigiano-Reggiano is the gold standard, but a good quality domestic Parmesan will also work.
- 1 Tbsp (15g) Unsalted Butter: Butter adds richness and helps emulsify the sauce. Using unsalted butter allows you to control the overall saltiness of the dish.
- 1 Cup (Packed) Fresh Basil Leaves: Fresh basil is crucial for the vibrant pesto ribbon. Make sure the leaves are dry before blending.
- ยผ Cup (30g) Toasted Pine Nuts: Toasting the pine nuts enhances their flavor and adds a delightful crunch.
- 1 Clove Garlic (for pesto): Adds a pungent kick to the pesto.
- 1 Tbsp (15ml) Lemon Juice: Brightens the pesto and balances the richness of the Alfredo sauce.
- Salt and Freshly Ground Black Pepper, to Taste: Seasoning is key! Adjust the salt and pepper to your liking.
- Fresh Basil Leaves for Garnish: Adds a final touch of freshness and visual appeal.
- Optional: Pinch of Red Pepper Flakes: For those who like a little heat, a pinch of red pepper flakes adds a subtle kick.
Substitutions & Variations
Steak: If you don’t have sirloin, feel free to use ribeye, New York strip, or even chicken breast cut into strips. Adjust cooking times accordingly.
Pasta: Linguine, spaghetti, or fettuccine alternatives work well. Gluten-free pasta can also be used.
Cheese: Asiago or Pecorino Romano can be used in place of some of the Parmesan for a different flavor profile.
Let’s Make Cajun Steak Mozzarella Alfredo Pasta: A Step-by-Step Guide
- Cook the Pasta: Bring a large pot of generously salted water to a rolling boil. Add the fettuccine pasta and cook according to package directions, usually 9-11 minutes, until al dente. ‘Al dente’ means ‘to the tooth’ in Italian โ the pasta should be firm to the bite. Before draining, reserve about ยฝ cup of the pasta water. This starchy water is liquid gold; it helps bind the sauce and pasta together, creating a creamy emulsion. Drain the pasta and set aside.
- Season and Sear the Steak: In a bowl, thoroughly coat the beef sirloin strips with the Cajun seasoning, ensuring each piece is well covered. Don’t be shy with the seasoning โ this is where the ‘Cajun’ in the dish comes alive! Heat 1 tablespoon of olive oil in a heavy-bottomed skillet (cast iron is ideal) over medium-high heat. Once the oil is shimmering, add the steak strips in a single layer (work in batches if necessary to avoid overcrowding the pan). Sear for 2-3 minutes per side, aiming for a beautiful brown crust while keeping the inside slightly pink. Remove the steak from the skillet and set aside.
- Sautรฉ Aromatics: Add the remaining 1 tablespoon of olive oil to the same skillet. Add the finely diced onion and sautรฉ for about 3 minutes, until translucent and softened. Next, add the minced garlic and cook for another minute, until fragrant. Be careful not to burn the garlic, as it can become bitter.
- Create the Alfredo Sauce: Reduce the heat to medium. Add the butter to the skillet and let it melt. Pour in the heavy cream, stirring constantly to combine with the melted butter and sautรฉed aromatics. Simmer for 2-3 minutes, allowing the sauce to slightly thicken.
- Incorporate the Cheese: Gradually stir in the grated Parmesan cheese and shredded mozzarella cheese, a handful at a time, until they are fully melted and the sauce is smooth and creamy. Season with salt, freshly ground black pepper, and a pinch of red pepper flakes (if desired) for a touch of heat. If the sauce becomes too thick, gradually add a tablespoon or two of the reserved pasta water until it reaches your desired consistency.
- Combine and Coat: Return the seared steak strips to the skillet with the Alfredo sauce. Add the cooked fettuccine pasta and toss everything together gently but thoroughly, ensuring the pasta is evenly coated in the rich, creamy sauce.
- Prepare the Basil Pesto Ribbon: While the pasta is warming through, prepare the basil pesto. In a food processor, combine the fresh basil leaves, toasted pine nuts, garlic clove, lemon juice, and a pinch of salt. Pulse until finely chopped, then slowly drizzle in 2 tablespoons of olive oil while processing until a smooth, vibrant green pesto forms.
- Plate and Garnish: Spoon a thin line of the basil pesto across the center of a warm white plate. Pile the Cajun steak mozzarella Alfredo pasta on one side of the pesto line. Using the back of a spoon, gently swirl the pesto through the pasta, creating a beautiful green ribbon effect. Garnish with a scattering of toasted pine nut shards and a few fresh basil leaves. Serve immediately.
Why This Cajun Steak Alfredo Works
This recipe isn’t just about throwing ingredients together; it’s about building layers of flavor. The Cajun seasoning provides a spicy kick that complements the richness of the Alfredo sauce. Searing the steak quickly locks in its juices, keeping it tender and flavorful. The basil pesto ribbon isn’t just for aesthetics; its bright, herbaceous notes cut through the richness of the sauce, adding a refreshing element to each bite. The reserved pasta water is crucial for creating a perfectly emulsified sauce that clings to the pasta.
Tips for the Perfect Sear
Achieving a good sear on the steak is vital for flavor and texture. Here are a few tips: First, ensure your skillet is very hot before adding the oil. Second, pat the steak strips dry with paper towels โ excess moisture will steam the steak instead of searing it. Third, don’t overcrowd the pan; work in batches if necessary. Finally, resist the urge to move the steak around while it’s searing; let it develop a nice crust before flipping.
Adjusting the Spice Level
The amount of Cajun seasoning can be adjusted to suit your preference. If you’re sensitive to spice, start with 1 ยฝ teaspoons and taste as you go. For those who love a fiery kick, feel free to add up to 2 tablespoons or even a dash of cayenne pepper. The optional red pepper flakes in the Alfredo sauce also contribute to the heat, so adjust accordingly.

Making Ahead & Storage
While this dish is best served immediately, you can prep some components ahead of time. The pesto can be made up to 2 days in advance and stored in an airtight container in the refrigerator. The steak can also be seasoned and cut into strips ahead of time. However, the Alfredo sauce is best made fresh, as it can thicken upon standing. Leftovers can be stored in an airtight container in the refrigerator for up to 2 days, but the sauce may become thicker and the pasta may absorb some of the liquid.
Frequently Asked Questions
Can I use a different type of steak?
Yes, you can! Ribeye or New York strip steak would also work well, but sirloin is a more affordable and readily available option.
Can I make this dish gluten-free?
Absolutely! Simply substitute the fettuccine pasta with a gluten-free pasta alternative.
What if I don’t have pine nuts?
Walnuts or pecans can be used as a substitute for pine nuts in the pesto, although the flavor will be slightly different.
Enjoy Your Cajun Steak Mozzarella Alfredo Pasta!
This Cajun Steak Mozzarella Alfredo Pasta is a truly decadent and flavorful dish that’s sure to impress. Don’t forget to save this recipe to Pinterest for later!
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spicy cajun steak mozzarella alfredo pasta
- Total Time: 45 minutes
- Yield: 4 servings 1x
- Diet: General
Description
This Cajun Steak Mozzarella Alfredo Pasta combines tender steak strips with a creamy Alfredo sauce and a vibrant basil pesto for a flavorful and satisfying meal. It’s perfect for a weeknight indulgence or a special occasion.
Ingredients
- 300g (10.5oz) Fettuccine Pasta: Use durum wheat semolina pasta for best texture.
- 250g (9oz) Beef Sirloin Steak: Cut into ยฝ inch strips.
- 1 Tbsp (15ml) Cajun Seasoning: Adjust to your spice preference.
- 2 Tbsp (30ml) Olive Oil: Extra virgin olive oil recommended.
- 2 Cloves Garlic, Minced: Use fresh garlic for best flavor.
- 1 Small Onion, Finely Diced: Yellow onion provides subtle sweetness.
- 150g (5.3oz) Mozzarella Cheese, Shredded: Low-moisture, part-skim mozzarella is ideal.
- 200ml (ยพ cup) Heavy Cream: Do not substitute with milk.
- 100g (3.5oz) Grated Parmesan Cheese: Freshly grated is best.
- 1 Tbsp (15g) Unsalted Butter: Allows control over saltiness.
- 1 Cup (Packed) Fresh Basil Leaves: Ensure leaves are dry.
- ยผ Cup (30g) Toasted Pine Nuts: Toast for enhanced flavor.
- 1 Clove Garlic (for pesto): Adds a pungent kick.
- 1 Tbsp (15ml) Lemon Juice: Brightens the pesto.
- Salt and Freshly Ground Black Pepper, to Taste: Season to your liking.
- Fresh Basil Leaves for Garnish: Adds freshness and visual appeal.
- Optional: Pinch of Red Pepper Flakes: For a touch of heat.
Instructions
- Cook Pasta: Boil fettuccine until al dente, reserving ยฝ cup pasta water.
- Sear Steak: Season steak with Cajun seasoning and sear in olive oil until browned.
- Sautรฉ Aromatics: Sautรฉ onion and garlic in olive oil until fragrant.
- Make Alfredo Sauce: Simmer heavy cream with butter, then stir in Parmesan and mozzarella.
- Combine & Coat: Return steak to sauce, add pasta, and toss to coat.
- Prepare Pesto: Blend basil, pine nuts, garlic, lemon juice, and olive oil.
- Plate & Garnish: Swirl pesto through pasta and garnish with basil and pine nuts.
Notes
Reserving pasta water helps create a creamy emulsion. Searing the steak quickly locks in juices. Adjust Cajun seasoning to your spice preference.
- Prep Time: 20 minutes
- Cook Time: 25 minutes
- Category: Pasta
- Method: Stovetop
- Cuisine: Italian
Nutrition
- Serving Size: 1 cup
- Calories: 750 kcal
- Sugar: 15 g
- Sodium: 800 mg
- Fat: 45 g
- Saturated Fat: 25 g
- Unsaturated Fat: 15 g
- Trans Fat: 1 g
- Carbohydrates: 60 g
- Fiber: 5 g
- Protein: 40 g
- Cholesterol: 150 mg
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